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Bear Creek at Coyote Trails Nature Center
Macroinvertebrate data: 04-05-2013
School: Oregon State University
Date and time: April 5, 2013, 12:06 p.m.
Water quality: Fair
Number of people sorting/identifying: 8
Water type: riffle
Time spent sorting/identifying: 45 minutes
Weather:
Percent EPT: 73.33%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: Talent Middle School, 7th graders. Salmon Watch day included Vegetation Transects, Photo points, and water quality sampling also.
Sensitivity to pollution
Sensitive
Count | |
---|---|
Caddisfly |
0 |
Mayfly |
10 |
Riffle beetle |
0 |
Stonefly |
1 |
Water penny |
0 |
Dobsonfly |
0 |
Sensitive total |
6 |
Somewhat Sensitive
Count | |
---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
1 |
Scud
|
0 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
0 |
Somewhat sensitive total |
2 |
Tolerant
Count | |
---|---|
Aquatic worm
|
0 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
3 |
Snail
|
0 |
Mosquito larva
|
0 |
Tolerant total |
1 |